I've used a MET Parachute on my daily commute for the last 18 months and really like it. I bought it after a high-speed face plant the resulted in a $9000 dental bill (gotta love Toronto's streetcar tracks!). Unlike some of the BMX/DH helmets, this one is very light and not at all hot (it also offers less protection in the event of a crash). Neither have I had a problem with it obscuring my vision. It also converts to a normal helmet quite quickly (three screws). I had to order it in from the UK, and it is a bit pricey but I feel it is worth it.